US4797027A - Automatic level-regulating sluice - Google Patents
Automatic level-regulating sluice Download PDFInfo
- Publication number
- US4797027A US4797027A US07/061,367 US6136787A US4797027A US 4797027 A US4797027 A US 4797027A US 6136787 A US6136787 A US 6136787A US 4797027 A US4797027 A US 4797027A
- Authority
- US
- United States
- Prior art keywords
- reach
- level
- caisson
- water
- sluice
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Images
Classifications
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02B—HYDRAULIC ENGINEERING
- E02B7/00—Barrages or weirs; Layout, construction, methods of, or devices for, making same
- E02B7/20—Movable barrages; Lock or dry-dock gates
- E02B7/205—Barrages controlled by the variations of the water level; automatically functioning barrages
-
- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
- G05D9/00—Level control, e.g. controlling quantity of material stored in vessel
- G05D9/04—Level control, e.g. controlling quantity of material stored in vessel with auxiliary non-electric power
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T137/00—Fluid handling
- Y10T137/2713—Siphons
Definitions
- the present invention relates to regulating a water level, for example in a canal reach or in a reservoir forming a portion of an irrigation network.
- the invention relates more particularly to a sluice for providing such regulation automatically.
- the controllable driving action of the caisson results from the fact that a controllable quantity of water is present in the bottom portion thereof, said quantity being controlled by the pressure of the air in the top portion thereof.
- the air is maintained at reduced pressure relative to the atmosphere by an air-driving system constituted by jets of water passing through a perforated partition separating two internal compartments of the caisson.
- the jets are formed by a difference in water level which is dynamically maintained between said two compartments by bottom openings which are suitably oriented for this purpose relative to the flow of water beneath the caisson.
- the reduced air pressure created in this way inside the caisson constitutes a "primary" pressure reduction. It is limited in controlled manner by a sensor constituted by a duct which connects the top portion of the driving caisson to an air inlet opening situated at a suitable height in the downstream reach. This opening is closed by the water when the level in said reach rises too far.
- the aim of the present invention is to provide more reliable and more accurate operation of such a regulating sluice in a simple manner.
- the present invention provides an automatic level-regulating sluice, comprising:
- a plate located in a throat for separating an upstream reach from a downstream reach, one of said reaches being a controlled reach whose level is to be maintained, said plate being movable by a motion including a vertical component for closing said throat to a greater or lesser extent to pass a greater or lesser water flowrate, and thereby counteract possible variations in level;
- a moving driving caisson whose motion includes a vertical component linked to the vertical component of the plate motion, said caisson having a variable depth thereof immersed in the water in order to receive a variable flotation thrust therefrom;
- said caisson having a bottom opening for enabling water to enter into said caisson and occupy a variable depth bottom portion thereof in order to increase the total weight acting on said caisson so that the resulting vertical force of said thrust and said weight may optionally cause said plate to move;
- said caisson also having top opening for enabling air to leave the remaining top portion of the caisson and/or to enter said top portion;
- said sluice further including a source of low pressure air for setting up a primary pressure reduction relative to the atmosphere;
- an air circuit itself including a low pressure feed branch and/or a low pressure exhaust branch, with at least one of said branches being controllable in such a manner as to put said top portion into communication with said source and with the atmosphere, in order respectively to cause water to penetrate into said caisson and to cause it to depart therefrom;
- a level sensor sensitive to the difference in level between said controlled reach and a reference level, said sensor controlling said controllable branch in order to apply an effective reduced air pressure to said driving caisson, said effective reduced air pressure being a controllable fraction of said low pressure provided by said source, said sensor causing said fraction to vary in a manner which is controlled by the level of said reach and of said reference level;
- said sluice being characterized by the fact that said low pressure source is a hydraulic suction Venturi, said Venturi comprising a water inlet fed from said upstream reach, a converging portion, an air suction inlet, a diverging portion and a water and air outlet opening out towards said downstream reach in order to cause said primary reduction in air pressure to appear at said suction inlet.
- said low pressure source is a hydraulic suction Venturi, said Venturi comprising a water inlet fed from said upstream reach, a converging portion, an air suction inlet, a diverging portion and a water and air outlet opening out towards said downstream reach in order to cause said primary reduction in air pressure to appear at said suction inlet.
- said sensor controls said air circuit as follows:
- FIG. 1 shows a first sluice in accordance with the invention suitable for regulating the level of a downstream reach, said sluice being shown in section on a longitudinal vertical plane I--I of FIG. 2.
- FIG. 2 is a fragmentary plan view of said sluice.
- FIG. 3 is a section view through said sluice on a vertical transverse plane III--III of FIG. 1.
- FIG. 4 shows the same sluice in accordance with the invention, but adapted to regulating the level of the upstream reach, said figure being a section on a longitudinal plane analogous to that of FIG. 1.
- An irrigation network includes an upstream reach 2 and a downstream reach 4 separated by a sluice having a metal plate 6 which moves in a concrete throat 8 and which may, optionally, close said throat entirely.
- the direction of flow is parallel to the plane of FIG. 1 and is referred to herein as "longitudinal”.
- the plate is mounted at the end of an upstream branch 10 of a metal frame having a downstream branch 12 which carries a counterweight 14.
- the frame oscillates about a transverse horizontal shaft 16 situated approximately at the water level in the upstream reach 2.
- the plate 6 is in the form of an angular sector of a circular cylinder about the axis of the shaft 16. It has a caisson 18 on its upstream face with the upstream wall 20 of the caisson being cylindrical and coaxial, and with its side walls 21 being vertical. A submerged bottom opening 22 of the caisson is protected by a grating. A top opening 24 is made through the top wall 25. It is connected to a flexible pipe 26 which is connected to a suction pipe 27 which constitutes the above-mentioned low pressure feed branch for sucking air from the caisson to a greater or lesser extent. This suction raises the internal level of the water 28 which enters the caisson via its bottom opening 22 to a greater or lesser extent relative to the level in the upstream reach 2, with the difference in level being referenced 29.
- the pipe 26 is also connected to a control pipe 30 which constitutes a portion of the above-mentioned low pressure exhaust branch.
- This branch is likewise put at low pressure by the suction pipe 27. It opens out into the top portion of a sensor chamber 32 whose bottom portion 34 opens out into the downstream reach 4.
- This chamber also has a top opening 36 which may be closed to a greater or lesser extent by a conical needle 38 with an upwardly directed point and carried on a float 40 which floats inside said chamber.
- the cross-sectional area of the air passage reduces with increasing level of the water in the reach 4 and consequently in the chamber 32.
- the level of the water in the enclosure rises faster than in the reach 4 by virtue of the increasing air pressure drop, which accelerates closure of the orifice 3b.
- the chamber 32 is normally fixed. However, it may be fixed at various different levels on vertical support strips 42 for changing the reference level of the reach 4. This may also be obtained by adjusting the height of the needle 38 above the float 40, by means of a threaded rod (not shown) carrying said needle and screwing to a greater or lesser extent into said float.
- the pressure in the suction pipe 27 is reduced by a hydraulic suction Venturi construction 50 via a throttle 52 which constitutes the above-mentioned air flowrate limiter.
- Said Venturi constitutes said source of reduced pressure and comprises a water inlet 54 which opens out into the upstream reach 2 via a grating and which feeds a converging length of tube 56.
- the converging length gives rise to a high speed and low pressure flow in a throat 57, thereby entraining air from an air inlet 58 which communicates with the suction pipe 59 on the throat axis.
- the mixture of water and air is taken up by a diverging length 60 which opens out via an outlet 62 into the downstream reach 4.
- the upstream level may vary between 1.40 m and 2 m, and the downstream level between 1.20 m and 1.70 m.
- the water Venturi is placed at a depth of 1 m, with a diameter of 150 mm at the inlet to to converging length, a diameter of 75 mm in the throat, and a diameter of 150 mm at the outlet from the diverging length.
- the converging length is 200 mm long, the throat is 75 mm long, and the diverging length is 615 mm long.
- the air suction pipe on the throat axis has an inside diameter of 10 mm and an outside diameter 12 mm. This Venturi provides sufficient pneumatic power to operate the sluice and the water leakage rate is acceptable.
- the sluice in accordance with the invention as shown in FIG. 4 is the same as that described above except that in order to regulate the level of the upstream reach 2, the chamber 32 containing the float 40 is placed in the upstream reach.
- the needle 38 has its point downwardly directed so as to close the opening 36 when the level drops.
- two separate chambers such as 32 are provided each having its own float such as 40 and its own closure needle such as 38, with one being placed in the upstream reach and the other in the downstream reach.
- the mode of operation is then selected by connecting the control pipe 30 to one or other the two chambers.
Landscapes
- Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Civil Engineering (AREA)
- Power Engineering (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Automation & Control Theory (AREA)
- Self-Closing Valves And Venting Or Aerating Valves (AREA)
- Barrages (AREA)
- Flow Control (AREA)
Abstract
Description
Claims (7)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR8608560A FR2600179A1 (en) | 1986-06-13 | 1986-06-13 | AUTOMATIC LEVEL CONTROL VALVE |
FR8608560 | 1986-06-13 |
Publications (1)
Publication Number | Publication Date |
---|---|
US4797027A true US4797027A (en) | 1989-01-10 |
Family
ID=9336297
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US07/061,367 Expired - Fee Related US4797027A (en) | 1986-06-13 | 1987-06-15 | Automatic level-regulating sluice |
Country Status (8)
Country | Link |
---|---|
US (1) | US4797027A (en) |
EP (1) | EP0249558B1 (en) |
BR (1) | BR8702999A (en) |
DE (1) | DE3761211D1 (en) |
ES (1) | ES2012093B3 (en) |
FR (1) | FR2600179A1 (en) |
GR (1) | GR3000369T3 (en) |
MA (1) | MA21000A1 (en) |
Cited By (30)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4963057A (en) * | 1989-01-03 | 1990-10-16 | Societe Anonyme Dite: Alsthom Fluides | Sluice gate for automatically regulating a level |
WO1994004759A1 (en) * | 1992-08-24 | 1994-03-03 | Murray Keith Nottle | Self-actuating sluice gate |
US5372456A (en) * | 1993-05-14 | 1994-12-13 | The Board Of Directors Of The St. Mary River Irrigation District | Irrigation control structure |
US5453054A (en) * | 1994-05-20 | 1995-09-26 | Waterworld Products, Inc. | Controllable waterslide weir |
US5516230A (en) * | 1994-05-05 | 1996-05-14 | Bargeron; Richard J. | Gate for controlling upstream water level |
AU672626B2 (en) * | 1992-08-24 | 1996-10-10 | Murray Keith Nottle | Self-actuating sluice gate |
US5758991A (en) * | 1995-11-17 | 1998-06-02 | Environmental Assessment Center Co., Ltd | Underground dam |
US6305411B1 (en) * | 2000-10-23 | 2001-10-23 | Ipex Inc. | Normally-open backwater valve |
US20030203760A1 (en) * | 2002-03-25 | 2003-10-30 | Henry Jeffery W. | Control system for water amusement devices |
US20050085306A1 (en) * | 2000-09-11 | 2005-04-21 | Nbgs International, Inc | Conveyor system and method for water amusement parks |
US20050090319A1 (en) * | 2003-10-24 | 2005-04-28 | Henry, Schooley & Associates, L.L.C. | Method and system of positionable screens for water amusement parks |
US20050114706A1 (en) * | 2003-11-26 | 2005-05-26 | Destefano Jason Michael | System and method for the collection and transmission of log data over a wide area network |
US20060111196A1 (en) * | 2004-11-24 | 2006-05-25 | Henry Jeffery W | Rollable carrier ride |
US20060111195A1 (en) * | 2004-11-24 | 2006-05-25 | Henry Jeffery W | Water amusement park conveyors |
US20070033867A1 (en) * | 2005-04-20 | 2007-02-15 | Henry Jeffery W | Composite tree |
US20070049386A1 (en) * | 2005-08-30 | 2007-03-01 | Henry Jeffery W | Adjusting participant flow rate in water amusement parks |
US20070049385A1 (en) * | 2005-08-30 | 2007-03-01 | Henry Jeffery W | Water amusement park conveyor barriers |
US20070049388A1 (en) * | 2005-08-03 | 2007-03-01 | Henry Jeffery W | Water amusement park water channel and adjustable flow controller |
US20070049387A1 (en) * | 2005-08-03 | 2007-03-01 | Henry Jeffery W | Water amusement park water channel flow system |
US20070060402A1 (en) * | 2005-08-30 | 2007-03-15 | Henry Jeffery W | Modular water amusement park conveyors |
US20070060403A1 (en) * | 2005-08-30 | 2007-03-15 | Henry Jeffery W | Water amusement park conveyors |
US20070087851A1 (en) * | 2005-09-02 | 2007-04-19 | Henry Jeffery W | Water amusement system and method including a self-contained floating marine park |
US20070219004A1 (en) * | 2006-03-14 | 2007-09-20 | Henry Jeffery W | Method and system of positionable covers for water amusement parks |
US7758435B2 (en) | 2005-09-02 | 2010-07-20 | Water Ride Concepts, Inc. | Amusement water rides involving interactive user environments |
US7762899B2 (en) | 2005-08-30 | 2010-07-27 | Water Ride Concepts, Inc. | Water amusement park conveyor support elements |
US7857704B2 (en) | 2005-09-15 | 2010-12-28 | Water Ride Concepts, Inc. | Amusement water rides involving games of chance |
US8079916B2 (en) | 2008-12-18 | 2011-12-20 | Water Ride Concepts, Inc. | Themed amusement river ride system |
US8210954B2 (en) | 2005-09-02 | 2012-07-03 | Water Ride Concepts, Inc. | Amusement water rides involving exercise circuits |
CN102587333A (en) * | 2012-04-05 | 2012-07-18 | 河海大学 | Lever type river water depth control device |
US20160138236A1 (en) * | 2013-07-12 | 2016-05-19 | Country Cocky Pty. Ltd. | Irrigation network valve |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2626388B1 (en) * | 1988-01-21 | 1995-06-02 | Alsthom Fluides | AIR PRESSURE CONTROL VALVE |
NL8901772A (en) * | 1989-07-10 | 1991-02-01 | Waterschap Kromme Rijn | LOCK WITH AUTOMATIC SLIDER. |
Citations (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2851861A (en) * | 1950-07-17 | 1958-09-16 | Neyrpic Ets | Water distribution canal systems |
DE1095751B (en) * | 1957-09-28 | 1960-12-22 | Dingler Werke Ag | Sector weir with automatic hydrostatic control |
US3221504A (en) * | 1960-04-29 | 1965-12-07 | Fluid Dynamics Ltd | Method and apparatus for the automatic regulation of boturating devices |
US3331208A (en) * | 1963-10-02 | 1967-07-18 | Traction Et D Expl Sa Soc Gen | Divided water-way for water-craft movement |
SU589332A1 (en) * | 1973-06-08 | 1978-01-25 | Rozhnov Valentin A | Device for controlling water levels in water races of hydraulic structures |
SU885421A1 (en) * | 1980-06-27 | 1981-11-30 | за витель Г. Л. Батин | Automatic water-actuated closure gate |
DE3023558A1 (en) * | 1980-06-24 | 1982-01-14 | Eugen Dipl.-Ing. 3300 Braunschweig Macke | Siphon weir continuous flow regulation - involves automatic float controlled venting mechanism varying air intake opening |
EP0083800A1 (en) * | 1982-01-12 | 1983-07-20 | Alsthom | Barrage for the automatic maintenance of a water level with little energy consumption |
JPS5948512A (en) * | 1982-09-14 | 1984-03-19 | Hokoku Kogyo Kk | Automatic sluice door |
-
1986
- 1986-06-13 FR FR8608560A patent/FR2600179A1/en active Pending
-
1987
- 1987-06-11 DE DE8787401315T patent/DE3761211D1/en not_active Expired - Fee Related
- 1987-06-11 MA MA21240A patent/MA21000A1/en unknown
- 1987-06-11 ES ES87401315T patent/ES2012093B3/en not_active Expired - Lifetime
- 1987-06-11 EP EP19870401315 patent/EP0249558B1/en not_active Expired
- 1987-06-12 BR BR8702999A patent/BR8702999A/en not_active IP Right Cessation
- 1987-06-15 US US07/061,367 patent/US4797027A/en not_active Expired - Fee Related
-
1990
- 1990-03-06 GR GR90400117T patent/GR3000369T3/en unknown
Patent Citations (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2851861A (en) * | 1950-07-17 | 1958-09-16 | Neyrpic Ets | Water distribution canal systems |
DE1095751B (en) * | 1957-09-28 | 1960-12-22 | Dingler Werke Ag | Sector weir with automatic hydrostatic control |
US3221504A (en) * | 1960-04-29 | 1965-12-07 | Fluid Dynamics Ltd | Method and apparatus for the automatic regulation of boturating devices |
US3331208A (en) * | 1963-10-02 | 1967-07-18 | Traction Et D Expl Sa Soc Gen | Divided water-way for water-craft movement |
SU589332A1 (en) * | 1973-06-08 | 1978-01-25 | Rozhnov Valentin A | Device for controlling water levels in water races of hydraulic structures |
DE3023558A1 (en) * | 1980-06-24 | 1982-01-14 | Eugen Dipl.-Ing. 3300 Braunschweig Macke | Siphon weir continuous flow regulation - involves automatic float controlled venting mechanism varying air intake opening |
SU885421A1 (en) * | 1980-06-27 | 1981-11-30 | за витель Г. Л. Батин | Automatic water-actuated closure gate |
EP0083800A1 (en) * | 1982-01-12 | 1983-07-20 | Alsthom | Barrage for the automatic maintenance of a water level with little energy consumption |
JPS5948512A (en) * | 1982-09-14 | 1984-03-19 | Hokoku Kogyo Kk | Automatic sluice door |
Non-Patent Citations (2)
Title |
---|
Patents Abstracts of Japan, vol. 8, No. 152, (M 309) (1589), Jul. 14, 1984. * |
Patents Abstracts of Japan, vol. 8, No. 152, (M-309) (1589), Jul. 14, 1984. |
Cited By (63)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4963057A (en) * | 1989-01-03 | 1990-10-16 | Societe Anonyme Dite: Alsthom Fluides | Sluice gate for automatically regulating a level |
WO1994004759A1 (en) * | 1992-08-24 | 1994-03-03 | Murray Keith Nottle | Self-actuating sluice gate |
AU672626B2 (en) * | 1992-08-24 | 1996-10-10 | Murray Keith Nottle | Self-actuating sluice gate |
US5372456A (en) * | 1993-05-14 | 1994-12-13 | The Board Of Directors Of The St. Mary River Irrigation District | Irrigation control structure |
US5516230A (en) * | 1994-05-05 | 1996-05-14 | Bargeron; Richard J. | Gate for controlling upstream water level |
US5453054A (en) * | 1994-05-20 | 1995-09-26 | Waterworld Products, Inc. | Controllable waterslide weir |
US5758991A (en) * | 1995-11-17 | 1998-06-02 | Environmental Assessment Center Co., Ltd | Underground dam |
US8197352B2 (en) | 2000-09-11 | 2012-06-12 | Water Ride Concepts, Inc. | Methods and systems for amusement park conveyor belt systems |
US20050085306A1 (en) * | 2000-09-11 | 2005-04-21 | Nbgs International, Inc | Conveyor system and method for water amusement parks |
US20050090320A1 (en) * | 2000-09-11 | 2005-04-28 | Nbgs International, Inc | Water amusement method |
US20050090321A1 (en) * | 2000-09-11 | 2005-04-28 | Nbgs International, Inc. | Conveyor control system and method for water amusement parks |
US8070615B2 (en) | 2000-09-11 | 2011-12-06 | Water Ride Concepts, Inc. | Methods and systems for water amusement conveyor |
US7740542B2 (en) | 2000-09-11 | 2010-06-22 | Water Ride Concepts, Inc. | Water amusement method |
US6305411B1 (en) * | 2000-10-23 | 2001-10-23 | Ipex Inc. | Normally-open backwater valve |
US8096892B2 (en) | 2002-03-25 | 2012-01-17 | Water Ride Concepts, Inc. | Control system for water amusement devices |
US7179173B2 (en) | 2002-03-25 | 2007-02-20 | Nbgs International Inc. | Control system for water amusement devices |
US20030203760A1 (en) * | 2002-03-25 | 2003-10-30 | Henry Jeffery W. | Control system for water amusement devices |
US20050090318A1 (en) * | 2003-10-24 | 2005-04-28 | Henry Jeffery W. | Continuous water ride |
US8075413B2 (en) | 2003-10-24 | 2011-12-13 | Water Ride Concepts, Inc. | Continuous water ride method and system for water amusement parks |
US7775894B2 (en) | 2003-10-24 | 2010-08-17 | Water Ride Concepts, Inc. | Method and system of participant identifiers for water amusement parks |
US20050090319A1 (en) * | 2003-10-24 | 2005-04-28 | Henry, Schooley & Associates, L.L.C. | Method and system of positionable screens for water amusement parks |
US20050114706A1 (en) * | 2003-11-26 | 2005-05-26 | Destefano Jason Michael | System and method for the collection and transmission of log data over a wide area network |
US20060111195A1 (en) * | 2004-11-24 | 2006-05-25 | Henry Jeffery W | Water amusement park conveyors |
US7942752B2 (en) | 2004-11-24 | 2011-05-17 | Water Ride Concepts, Inc. | Water amusement park multiple path conveyors |
US20060142090A1 (en) * | 2004-11-24 | 2006-06-29 | Henry, Schooley & Associates, L.L.C. | Water amusement park multiple path conveyors |
US20060135274A1 (en) * | 2004-11-24 | 2006-06-22 | Henry, Schooley & Associates, L.L.C. | Water amusement park conveyor roller belts |
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US8162769B2 (en) | 2004-11-24 | 2012-04-24 | Water Ride Concepts, Inc. | Water amusement park conveyor roller belts |
US7785207B2 (en) | 2005-04-20 | 2010-08-31 | Water Ride Concepts, Inc. | Water amusement system with elevated structure |
US7921601B2 (en) | 2005-04-20 | 2011-04-12 | Water Ride Concepts, Inc. | Water amusement system with trees |
US20070051039A1 (en) * | 2005-04-20 | 2007-03-08 | Henry Jeffery W | Water amusement system with trees |
US20070051037A1 (en) * | 2005-04-20 | 2007-03-08 | Henry Jeffery W | Thematic tree system |
US20070033866A1 (en) * | 2005-04-20 | 2007-02-15 | Henry Jeffery W | Lift apparatus for base-mounted plant |
US20070033867A1 (en) * | 2005-04-20 | 2007-02-15 | Henry Jeffery W | Composite tree |
US7727077B2 (en) | 2005-08-03 | 2010-06-01 | Water Ride Concepts, Inc. | Water amusement park water channel flow system |
US7775895B2 (en) | 2005-08-03 | 2010-08-17 | Water Ride Concepts, Inc. | Water amusement park water channel and adjustable flow controller |
US20070049387A1 (en) * | 2005-08-03 | 2007-03-01 | Henry Jeffery W | Water amusement park water channel flow system |
US20070049388A1 (en) * | 2005-08-03 | 2007-03-01 | Henry Jeffery W | Water amusement park water channel and adjustable flow controller |
US7815514B2 (en) | 2005-08-30 | 2010-10-19 | Water Ride Concepts, Inc. | Water amusement park conveyor barriers |
US7762899B2 (en) | 2005-08-30 | 2010-07-27 | Water Ride Concepts, Inc. | Water amusement park conveyor support elements |
US8282497B2 (en) | 2005-08-30 | 2012-10-09 | Water Ride Concepts, Inc. | Modular water amusement park conveyors |
US20070060403A1 (en) * | 2005-08-30 | 2007-03-15 | Henry Jeffery W | Water amusement park conveyors |
US20070060402A1 (en) * | 2005-08-30 | 2007-03-15 | Henry Jeffery W | Modular water amusement park conveyors |
US20070049385A1 (en) * | 2005-08-30 | 2007-03-01 | Henry Jeffery W | Water amusement park conveyor barriers |
US20070049386A1 (en) * | 2005-08-30 | 2007-03-01 | Henry Jeffery W | Adjusting participant flow rate in water amusement parks |
US20070087851A1 (en) * | 2005-09-02 | 2007-04-19 | Henry Jeffery W | Water amusement system and method including a self-contained floating marine park |
US7758435B2 (en) | 2005-09-02 | 2010-07-20 | Water Ride Concepts, Inc. | Amusement water rides involving interactive user environments |
US8663023B2 (en) | 2005-09-02 | 2014-03-04 | Water Ride Concepts, Inc. | Methods and systems for viewing marine life from self-contained floating marine parks |
US7811177B2 (en) | 2005-09-02 | 2010-10-12 | Water Ride Concepts, Inc. | Water amusement system and method including a self-contained floating marine park |
US7780536B2 (en) | 2005-09-02 | 2010-08-24 | Water Ride Concepts, Inc. | Methods and systems for positionable screen for self-contained floating marine parks |
US7775896B2 (en) | 2005-09-02 | 2010-08-17 | Water Ride Concepts, Inc. | Methods and systems for self-contained floating marine parks |
US7766753B2 (en) | 2005-09-02 | 2010-08-03 | Water Ride Concepts, Inc. | Methods and systems for modular self-contained floating marine parks |
US20070087853A1 (en) * | 2005-09-02 | 2007-04-19 | Henry Jeffery W | Methods and systems for active filtration of portions of self-contained floating marine parks |
US8210954B2 (en) | 2005-09-02 | 2012-07-03 | Water Ride Concepts, Inc. | Amusement water rides involving exercise circuits |
US7828667B2 (en) | 2005-09-02 | 2010-11-09 | Water Ride Concepts, Inc. | Methods and systems for active filtration of portions of self-contained floating marine parks |
US7857704B2 (en) | 2005-09-15 | 2010-12-28 | Water Ride Concepts, Inc. | Amusement water rides involving games of chance |
US20070219004A1 (en) * | 2006-03-14 | 2007-09-20 | Henry Jeffery W | Method and system of positionable covers for water amusement parks |
US7762900B2 (en) | 2006-03-14 | 2010-07-27 | Water Ride Concepts, Inc. | Method and system of positionable covers for water amusement parks |
US8251832B2 (en) | 2006-03-14 | 2012-08-28 | Water Ride Concepts, Inc. | Method and system of positionable covers for water amusement parks |
US8079916B2 (en) | 2008-12-18 | 2011-12-20 | Water Ride Concepts, Inc. | Themed amusement river ride system |
CN102587333A (en) * | 2012-04-05 | 2012-07-18 | 河海大学 | Lever type river water depth control device |
US20160138236A1 (en) * | 2013-07-12 | 2016-05-19 | Country Cocky Pty. Ltd. | Irrigation network valve |
US9850635B2 (en) * | 2013-07-12 | 2017-12-26 | Country Cocky Pty. Ltd. | Irrigation network valve |
Also Published As
Publication number | Publication date |
---|---|
MA21000A1 (en) | 1987-12-31 |
GR3000369T3 (en) | 1991-06-07 |
EP0249558A1 (en) | 1987-12-16 |
DE3761211D1 (en) | 1990-01-25 |
EP0249558B1 (en) | 1989-12-20 |
FR2600179A1 (en) | 1987-12-18 |
BR8702999A (en) | 1988-03-08 |
ES2012093B3 (en) | 1990-03-01 |
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